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Finding the Fourth Proportional to 66,258.92, 91,436.56 and 49,338.84

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Solution

The fourth proportional to 66,258.92, 91,436.56 and 49,338.84 is: 68,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,258.92 : 91,436.56 = 49,338.84 : x
  2. Step 2: Convert to fraction form
    66,258.92/91,436.56 = 49,338.84/x
  3. Step 3: Cross multiply
    66,258.92x = 91,436.56 × 49,338.84
  4. Step 4: Simplify right side
    66,258.92x = 4,511,373,803.99
  5. Step 5: Solve for x
    x = 4,511,373,803.99/66,258.92
  6. Step 6: Final answer
    x = 68,087.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.